I have had a look at the "What’s new in Workstation Tech Preview 2017" document and do not see any changes related to high DPI support, or even mixed DPI support, on the Windows platform.
Specifically, the current production version of VMware Workstation is a bit of a challenge to use on a (Windows 10) laptop with a high DPI screen (e.g. a Dell XPS 13, 3200x1800) - and these problems get worse the moment that a secondary display with more normal DPI is attached (e.g. an Asus PB278Q at 2560x1440).
The following scenarios are a pain for me:
I appreciate that these DPI scenarios are a pain, but I also believe that VMware Workstation should a) enable the guest in such scenarios and b) handle these scenarios itself fine, too.